This signature file may be used to cryptographically verify file integrity, like this:: $ gpg --keyserver hkp://keyserver.ubuntu.com --recv-keys 0xA16EB94D $ gpg --list-keys 0xA16EB94D pub 2048R/A16EB94D 2008-08-15 [expires: 2023-08-12] uid Turnkey Linux Release Key $ gpg --verify turnkey-wordpress-12.0-squeeze-x86.iso.sig gpg: Signature made Sat Aug 18 18:20:47 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 7e813c0bb8f1e712befcd9dd983551dc0f090057 * md5sum 60d5fcc61c5728772f99fab8d7ad7f28 You can calculate these on your end and compare to check for errors, but cryptographic verification is recommended for security reasons. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) iQEcBAABAgAGBQJQL9z0AAoJEIXCXpWhbrlNUX8H/2ap4y6YGauYQixO5tQm1fxc YTFzgXH8p9EZylIhDoxa8fI7q6WVMJVMLPXDnnhO5XukuLRhRYmrZIxcJZvjBvk9 NOhK9EOlKggWk+/l9ipDer+vwg41AMs+d3YO6sEIA4YD19q0fs95UL5COcF1Q5a6 7b6hldzDF0hu00uIYnauPGLT4VF+B/HzecaMpvR/wei/lj4gJHzT0iju9Ugww0Lc f07uUr7aNhZ80qbKzTZeCbFuqxYgyR81Pwz5wcv13y1S27RVz6D81bFIm2dTQWRr mE1sm1VcxVhr43gjn19pbObqKuYbHjl875Hs/hNDHQnseqSn7vrcexf00T3pPuc= =yq0d -----END PGP SIGNATURE-----